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JVisualVm: which classes cosume too much memory?

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Hello everybody!

I am now using JVisualVM for trying to understand if are there programming errors in my code that do not prevent my application to work fine but that causes too memory usage. But: as I perform a HeadDump I can find, for example, 203489 instances of java.lang.String. Is there a way to know in which classes/object are they instantiated (for String instances, but also for other classes as ArrayList, ...) ?

Thank you for attention!
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